llvm-project/llvm/test/CodeGen/AMDGPU/fdiv.ll

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; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=FUNC %s
; RUN: llc -march=amdgcn -mcpu=hawaii -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=FUNC %s
; RUN: llc -march=amdgcn -mcpu=fiji -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=FUNC %s
; RUN: llc -march=r600 -mcpu=redwood < %s | FileCheck -check-prefix=R600 -check-prefix=FUNC %s
; These tests check that fdiv is expanded correctly and also test that the
; scheduler is scheduling the RECIP_IEEE and MUL_IEEE instructions in separate
; instruction groups.
; These test check that fdiv using unsafe_fp_math, coarse fp div, and IEEE754 fp div.
; FUNC-LABEL: {{^}}fdiv_f32:
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW]}}, KC0[2].W
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW]}}, KC0[2].Z, PS
; GCN: v_div_scale_f32 [[NUM_SCALE:v[0-9]+]]
; GCN-DAG: v_div_scale_f32 [[DEN_SCALE:v[0-9]+]]
; GCN-DAG: v_rcp_f32_e32 [[NUM_RCP:v[0-9]+]], [[NUM_SCALE]]
; GCN: s_setreg_imm32_b32 hwreg(HW_REG_MODE, 4, 2), 3
; GCN: v_fma_f32 [[A:v[0-9]+]], -[[NUM_SCALE]], [[NUM_RCP]], 1.0
; GCN: v_fma_f32 [[B:v[0-9]+]], [[A]], [[NUM_RCP]], [[NUM_RCP]]
; GCN: v_mul_f32_e32 [[C:v[0-9]+]], [[B]], [[DEN_SCALE]]
; GCN: v_fma_f32 [[D:v[0-9]+]], -[[NUM_SCALE]], [[C]], [[DEN_SCALE]]
; GCN: v_fma_f32 [[E:v[0-9]+]], [[D]], [[B]], [[C]]
; GCN: v_fma_f32 [[F:v[0-9]+]], -[[NUM_SCALE]], [[E]], [[DEN_SCALE]]
; GCN: s_setreg_imm32_b32 hwreg(HW_REG_MODE, 4, 2), 0
; GCN: v_div_fmas_f32 [[FMAS:v[0-9]+]], [[F]], [[B]], [[E]]
; GCN: v_div_fixup_f32 v{{[0-9]+}}, [[FMAS]],
define amdgpu_kernel void @fdiv_f32(float addrspace(1)* %out, float %a, float %b) #0 {
entry:
%fdiv = fdiv float %a, %b
store float %fdiv, float addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}fdiv_f32_denormals:
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW]}}, KC0[2].W
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW]}}, KC0[2].Z, PS
; GCN: v_div_scale_f32 [[NUM_SCALE:v[0-9]+]]
; GCN-DAG: v_div_scale_f32 [[DEN_SCALE:v[0-9]+]]
; GCN-DAG: v_rcp_f32_e32 [[NUM_RCP:v[0-9]+]], [[NUM_SCALE]]
; GCN-NOT: s_setreg
; GCN: v_fma_f32 [[A:v[0-9]+]], -[[NUM_SCALE]], [[NUM_RCP]], 1.0
; GCN: v_fma_f32 [[B:v[0-9]+]], [[A]], [[NUM_RCP]], [[NUM_RCP]]
; GCN: v_mul_f32_e32 [[C:v[0-9]+]], [[B]], [[DEN_SCALE]]
; GCN: v_fma_f32 [[D:v[0-9]+]], -[[NUM_SCALE]], [[C]], [[DEN_SCALE]]
; GCN: v_fma_f32 [[E:v[0-9]+]], [[D]], [[B]], [[C]]
; GCN: v_fma_f32 [[F:v[0-9]+]], -[[NUM_SCALE]], [[E]], [[DEN_SCALE]]
; GCN-NOT: s_setreg
; GCN: v_div_fmas_f32 [[FMAS:v[0-9]+]], [[F]], [[B]], [[E]]
; GCN: v_div_fixup_f32 v{{[0-9]+}}, [[FMAS]],
define amdgpu_kernel void @fdiv_f32_denormals(float addrspace(1)* %out, float %a, float %b) #2 {
entry:
%fdiv = fdiv float %a, %b
store float %fdiv, float addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}fdiv_25ulp_f32:
; GCN: v_cndmask_b32
; GCN: v_mul_f32
; GCN: v_rcp_f32
; GCN: v_mul_f32
; GCN: v_mul_f32
define amdgpu_kernel void @fdiv_25ulp_f32(float addrspace(1)* %out, float %a, float %b) #0 {
entry:
%fdiv = fdiv float %a, %b, !fpmath !0
store float %fdiv, float addrspace(1)* %out
ret void
}
; Use correct fdiv
; FUNC-LABEL: {{^}}fdiv_25ulp_denormals_f32:
; GCN: v_fma_f32
; GCN: v_div_fmas_f32
; GCN: v_div_fixup_f32
define amdgpu_kernel void @fdiv_25ulp_denormals_f32(float addrspace(1)* %out, float %a, float %b) #2 {
entry:
%fdiv = fdiv float %a, %b, !fpmath !0
store float %fdiv, float addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}fdiv_fast_denormals_f32:
; GCN: v_rcp_f32_e32 [[RCP:v[0-9]+]], s{{[0-9]+}}
; GCN: v_mul_f32_e32 [[RESULT:v[0-9]+]], s{{[0-9]+}}, [[RCP]]
; GCN-NOT: [[RESULT]]
; GCN: buffer_store_dword [[RESULT]]
define amdgpu_kernel void @fdiv_fast_denormals_f32(float addrspace(1)* %out, float %a, float %b) #2 {
entry:
%fdiv = fdiv fast float %a, %b
store float %fdiv, float addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}fdiv_f32_fast_math:
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW]}}, KC0[2].W
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW]}}, KC0[2].Z, PS
; GCN: v_rcp_f32_e32 [[RCP:v[0-9]+]], s{{[0-9]+}}
; GCN: v_mul_f32_e32 [[RESULT:v[0-9]+]], s{{[0-9]+}}, [[RCP]]
; GCN-NOT: [[RESULT]]
; GCN: buffer_store_dword [[RESULT]]
define amdgpu_kernel void @fdiv_f32_fast_math(float addrspace(1)* %out, float %a, float %b) #0 {
entry:
%fdiv = fdiv fast float %a, %b
store float %fdiv, float addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}fdiv_f32_arcp_math:
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW]}}, KC0[2].W
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW]}}, KC0[2].Z, PS
; GCN: v_rcp_f32_e32 [[RCP:v[0-9]+]], s{{[0-9]+}}
; GCN: v_mul_f32_e32 [[RESULT:v[0-9]+]], s{{[0-9]+}}, [[RCP]]
; GCN-NOT: [[RESULT]]
; GCN: buffer_store_dword [[RESULT]]
define amdgpu_kernel void @fdiv_f32_arcp_math(float addrspace(1)* %out, float %a, float %b) #0 {
entry:
%fdiv = fdiv arcp float %a, %b
store float %fdiv, float addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}fdiv_v2f32:
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW]}}, KC0[3].Z
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW]}}, KC0[3].Y
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW]}}, KC0[3].X, PS
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW]}}, KC0[2].W, PS
; GCN: v_div_scale_f32
; GCN: v_div_scale_f32
; GCN: v_div_scale_f32
; GCN: v_div_scale_f32
define amdgpu_kernel void @fdiv_v2f32(<2 x float> addrspace(1)* %out, <2 x float> %a, <2 x float> %b) #0 {
entry:
%fdiv = fdiv <2 x float> %a, %b
store <2 x float> %fdiv, <2 x float> addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}fdiv_ulp25_v2f32:
; GCN: v_cmp_gt_f32
; GCN: v_cmp_gt_f32
define amdgpu_kernel void @fdiv_ulp25_v2f32(<2 x float> addrspace(1)* %out, <2 x float> %a, <2 x float> %b) #0 {
entry:
%fdiv = fdiv arcp <2 x float> %a, %b, !fpmath !0
store <2 x float> %fdiv, <2 x float> addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}fdiv_v2f32_fast_math:
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW]}}, KC0[3].Z
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW]}}, KC0[3].Y
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW]}}, KC0[3].X, PS
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW]}}, KC0[2].W, PS
; GCN: v_rcp_f32
; GCN: v_rcp_f32
define amdgpu_kernel void @fdiv_v2f32_fast_math(<2 x float> addrspace(1)* %out, <2 x float> %a, <2 x float> %b) #0 {
entry:
%fdiv = fdiv fast <2 x float> %a, %b
store <2 x float> %fdiv, <2 x float> addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}fdiv_v2f32_arcp_math:
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW]}}, KC0[3].Z
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW]}}, KC0[3].Y
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW]}}, KC0[3].X, PS
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW]}}, KC0[2].W, PS
; GCN: v_rcp_f32
; GCN: v_rcp_f32
define amdgpu_kernel void @fdiv_v2f32_arcp_math(<2 x float> addrspace(1)* %out, <2 x float> %a, <2 x float> %b) #0 {
entry:
%fdiv = fdiv arcp <2 x float> %a, %b
store <2 x float> %fdiv, <2 x float> addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}fdiv_v4f32:
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; GCN: v_div_fixup_f32
; GCN: v_div_fixup_f32
; GCN: v_div_fixup_f32
; GCN: v_div_fixup_f32
define amdgpu_kernel void @fdiv_v4f32(<4 x float> addrspace(1)* %out, <4 x float> addrspace(1)* %in) #0 {
[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction One of several parallel first steps to remove the target type of pointers, replacing them with a single opaque pointer type. This adds an explicit type parameter to the gep instruction so that when the first parameter becomes an opaque pointer type, the type to gep through is still available to the instructions. * This doesn't modify gep operators, only instructions (operators will be handled separately) * Textual IR changes only. Bitcode (including upgrade) and changing the in-memory representation will be in separate changes. * geps of vectors are transformed as: getelementptr <4 x float*> %x, ... ->getelementptr float, <4 x float*> %x, ... Then, once the opaque pointer type is introduced, this will ultimately look like: getelementptr float, <4 x ptr> %x with the unambiguous interpretation that it is a vector of pointers to float. * address spaces remain on the pointer, not the type: getelementptr float addrspace(1)* %x ->getelementptr float, float addrspace(1)* %x Then, eventually: getelementptr float, ptr addrspace(1) %x Importantly, the massive amount of test case churn has been automated by same crappy python code. I had to manually update a few test cases that wouldn't fit the script's model (r228970,r229196,r229197,r229198). The python script just massages stdin and writes the result to stdout, I then wrapped that in a shell script to handle replacing files, then using the usual find+xargs to migrate all the files. update.py: import fileinput import sys import re ibrep = re.compile(r"(^.*?[^%\w]getelementptr inbounds )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))") normrep = re.compile( r"(^.*?[^%\w]getelementptr )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))") def conv(match, line): if not match: return line line = match.groups()[0] if len(match.groups()[5]) == 0: line += match.groups()[2] line += match.groups()[3] line += ", " line += match.groups()[1] line += "\n" return line for line in sys.stdin: if line.find("getelementptr ") == line.find("getelementptr inbounds"): if line.find("getelementptr inbounds") != line.find("getelementptr inbounds ("): line = conv(re.match(ibrep, line), line) elif line.find("getelementptr ") != line.find("getelementptr ("): line = conv(re.match(normrep, line), line) sys.stdout.write(line) apply.sh: for name in "$@" do python3 `dirname "$0"`/update.py < "$name" > "$name.tmp" && mv "$name.tmp" "$name" rm -f "$name.tmp" done The actual commands: From llvm/src: find test/ -name *.ll | xargs ./apply.sh From llvm/src/tools/clang: find test/ -name *.mm -o -name *.m -o -name *.cpp -o -name *.c | xargs -I '{}' ../../apply.sh "{}" From llvm/src/tools/polly: find test/ -name *.ll | xargs ./apply.sh After that, check-all (with llvm, clang, clang-tools-extra, lld, compiler-rt, and polly all checked out). The extra 'rm' in the apply.sh script is due to a few files in clang's test suite using interesting unicode stuff that my python script was throwing exceptions on. None of those files needed to be migrated, so it seemed sufficient to ignore those cases. Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7636 llvm-svn: 230786
2015-02-28 03:29:02 +08:00
%b_ptr = getelementptr <4 x float>, <4 x float> addrspace(1)* %in, i32 1
%a = load <4 x float>, <4 x float> addrspace(1) * %in
%b = load <4 x float>, <4 x float> addrspace(1) * %b_ptr
%result = fdiv <4 x float> %a, %b
store <4 x float> %result, <4 x float> addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}fdiv_v4f32_fast_math:
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; GCN: v_rcp_f32
; GCN: v_rcp_f32
; GCN: v_rcp_f32
; GCN: v_rcp_f32
define amdgpu_kernel void @fdiv_v4f32_fast_math(<4 x float> addrspace(1)* %out, <4 x float> addrspace(1)* %in) #0 {
%b_ptr = getelementptr <4 x float>, <4 x float> addrspace(1)* %in, i32 1
%a = load <4 x float>, <4 x float> addrspace(1) * %in
%b = load <4 x float>, <4 x float> addrspace(1) * %b_ptr
%result = fdiv fast <4 x float> %a, %b
store <4 x float> %result, <4 x float> addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}fdiv_v4f32_arcp_math:
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; R600-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; GCN: v_rcp_f32
; GCN: v_rcp_f32
; GCN: v_rcp_f32
; GCN: v_rcp_f32
define amdgpu_kernel void @fdiv_v4f32_arcp_math(<4 x float> addrspace(1)* %out, <4 x float> addrspace(1)* %in) #0 {
%b_ptr = getelementptr <4 x float>, <4 x float> addrspace(1)* %in, i32 1
%a = load <4 x float>, <4 x float> addrspace(1) * %in
%b = load <4 x float>, <4 x float> addrspace(1) * %b_ptr
%result = fdiv arcp <4 x float> %a, %b
store <4 x float> %result, <4 x float> addrspace(1)* %out
ret void
}
attributes #0 = { nounwind "enable-unsafe-fp-math"="false" "target-features"="-fp32-denormals,-flat-for-global" }
attributes #1 = { nounwind "enable-unsafe-fp-math"="true" "target-features"="-fp32-denormals,-flat-for-global" }
attributes #2 = { nounwind "enable-unsafe-fp-math"="false" "target-features"="+fp32-denormals,-flat-for-global" }
!0 = !{float 2.500000e+00}